they are:
- changed the makefile
- prototyped functions
- eliminated pathnames.h since all it does is #include <paths.h>
- used gettytab.h for various function declarations
- verified stack usage at 712 bytes
- eliminated dummy gethostname() function. Instead, get it
from libc. This exposes a problem with gethostname.
See PR#59 for details.
- eliminated a dependancy on strftime for the moment by
calling ctime() instead.
- Added GNO-formatted versions of the man pages.
